/**
 * Copyright (c) 2018 Ujued and APISP.NET. All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package cc.witalk.service.impl;

import java.util.Objects;

import cc.witalk.BusinessException;
import cc.witalk.domain.Topic;
import cc.witalk.mapper.TopicMapper;
import cc.witalk.service.TopicService;
import net.apisp.quick.ioc.Container.SafeObject;
import net.apisp.quick.ioc.annotation.Autowired;
import net.apisp.quick.ioc.annotation.Singleton;

/**
 * @author Ujued
 * @date 2018-06-28 22:24:51
 */
@Singleton
public class TopicServiceImpl implements TopicService {

	@Autowired(safeType = TopicMapper.class)
	private SafeObject<TopicMapper> topicMapper;

	@Override
	public Topic getById(Long id) throws BusinessException {
		Topic topic = topicMapper.get().getById(id);
		if(Objects.isNull(topic)) {
			BusinessException.raise("没有ID为{}的帖子！", id);
		}
		return topic;
	}
}
